摘要
ＣａＯ－Ａｌ＿２Ｏ＿３－ＳｉＯ＿２玻璃表面上晶体生长动力学和分相影响杨晓晶，李家治（中国科学院上海硅酸盐研究所２０００５０）许淑惠（西北轻工业学院７１２０８１）ＳｕｒｆａｃｅＣｒｙｓｔａｌＧｒｏｗｔｈＫｉｎｅｔｉｃｓｉｎＣａＯ－Ａｌ＿２Ｏ＿３－ＳｉＯ...
The kinetics of growth of a-cristobalite spherulites and β-wollastonite dehtrites on the surface of a glass with CaO/SiO_2=1/2 containing 6mol%Al_2O_3 were studied with optical and transmission electron microscopy. It was concluded that:(1) the crystals growth rates are constant with time;(2)the expcrimental values of the growth rates are in good agreement with ln[U/(△T)￣2]=lnK-Q/T,where K,Q are contant;and(3)there is no obvious effeot of phase separation on the growth kinetics of both crystals,which was explained that the size of phase separation is much less than that of the distortions of microstructure involved in growing crystals.
出处
《玻璃与搪瓷》
CAS
北大核心
1994年第6期1-6,共6页
Glass & Enamel
关键词
玻璃
晶体生长
动力学
分相
CaO-Al_2O_3-SiO_2 glass Surface orystallization Phase separation Kinetics of crystal growth
